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/*-------------------------------------------------------------------------
*
* syncrep.h
* Exports from replication/syncrep.c.
*
* Portions Copyright (c) 2010-2014, PostgreSQL Global Development Group
*
* IDENTIFICATION
* src/include/replication/syncrep.h
*
*-------------------------------------------------------------------------
*/
#ifndef _SYNCREP_H
#define _SYNCREP_H
#include "access/xlogdefs.h"
#include "utils/guc.h"
#define SyncRepRequested() \
(max_wal_senders > 0 && synchronous_commit > SYNCHRONOUS_COMMIT_LOCAL_FLUSH)
/* SyncRepWaitMode */
#define SYNC_REP_NO_WAIT -1
#define SYNC_REP_WAIT_WRITE 0
#define SYNC_REP_WAIT_FLUSH 1
#define NUM_SYNC_REP_WAIT_MODE 2
/* syncRepState */
#define SYNC_REP_NOT_WAITING 0
#define SYNC_REP_WAITING 1
#define SYNC_REP_WAIT_COMPLETE 2
/* user-settable parameters for synchronous replication */
extern char *SyncRepStandbyNames;
/* called by user backend */
extern void SyncRepWaitForLSN(XLogRecPtr XactCommitLSN);
/* called at backend exit */
extern void SyncRepCleanupAtProcExit(void);
/* called by wal sender */
extern void SyncRepInitConfig(void);
extern void SyncRepReleaseWaiters(void);
/* called by checkpointer */
extern void SyncRepUpdateSyncStandbysDefined(void);
/* called by various procs */
extern int SyncRepWakeQueue(bool all, int mode);
extern bool check_synchronous_standby_names(char **newval, void **extra, GucSource source);
extern void assign_synchronous_commit(int newval, void *extra);
#endif /* _SYNCREP_H */
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